Visual Inspection, or Visual Testing (VT), is the most basic method of inspection. VT requires viewing a component using the naked eye to examine for surface flaws. It requires no equipment except the naked eye of a qualified inspector.
VT can be used for internal and external surface inspection of a variety of components, including forgings, castings, pressure vessels, piping, and weldments.
This inspection is normally used in conjunction with a Magnetic Particle or Liquid Penetrant Inspection, as these are more thorough inspection methods.
VT is simple and much less technologically advanced in comparison to other NDT methods. The advantage to this is that less equipment is needed and costs can be kept down. VT is also one of the most reliable techniques, as a well-trained inspector can detect most signs of damage.
If you require any further information, please do not hesitate to contact email@example.com.